Terror Behind the Walls Promo Code 2026 — Up to 20% OFF Instant

Halloween is coming! Want to have a thrilling and memorable night on Halloween? Then you must know about the Terror Behind the Walls. It was highly praised by the media, such as The New York Times called it“perfect for Halloween”, Forbes named it “#1 in the nation”, and NBC’s TODAY Show reported on it. Terror Behind the Walls is the largest haunted house and has been one of the hottest haunted attractions in the United States. It happens at America's most notable prison, which is in the gigantic, castle-like walls of Eastern State Penitentiary. There 6 different attractions – Infirmary, Machine Shop, Lock Down, Break out, Blood Yard, and Quarantine 4D. One admission fee covers these 6 attractions, so you can choose what you're interested in. What's more, you can learn more about Eastern State's fascinating history during Terror Behind the Walls.